题目内容
(1)解方程:4x2=9;
(2)2
-|2-
|+
.
(2)2
| 3 |
| 3 |
| 3 | -27 |
(1)4x2=9,
x2=
,
x=±
;
(2)2
-|2-
|+
=2
-2+
-3
=3
-5.
x2=
| 9 |
| 4 |
x=±
| 3 |
| 2 |
(2)2
| 3 |
| 3 |
| 3 | -27 |
=2
| 3 |
| 3 |
=3
| 3 |
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题目内容
| 3 |
| 3 |
| 3 | -27 |
| 9 |
| 4 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 | -27 |
| 3 |
| 3 |
| 3 |